Mild fever past 2days, sore throa,loss of smell, congestion, pain in forehead, hurts to swallow, nostrils hurt when breathing and dry lips. taken nyquilt but no improvement?

You have a viral upper respiratory infection, covid-19 infection can't be ruled out. You can take advil OTC for headache and sore throat for a couple days (take with foods), nasal inhaler for nose congestion and put a humidifier next to your bed. Those symptoms, covid-19 infection or not, should resolve after 5 days. See a doctor or urgent care if shortness of breath, high fever +/- chest pain.

This may very well be a covid infection. Can you test? Treatment is largely supportive with isolation,resting,drinking loads of fluids,taking tylenol, gargling with warm salt water,use of lozenges. Dayquil may better relieve nasal congestion& cough. Isolate from others until you go 24-48 hours without symptoms. At your age you should do well but notify your MD as needed.